fixed inventory for frontend
Merge branch 'develop' of https://github.com/ayaigame/ayai-backend into item-use

Conflicts:
	src/main/scala/ayai/gamestate/MessageProcessor.scala
Merge branch 'develop' of https://github.com/ayaigame/ayai-backend into item-use
npcfactory
added config for npcs
npcs now spawn
Merge branch 'develop' of https://github.com/ayaigame/ayai-backend into item-use
added sprite images
loot into entityfactory
Progress towards storing equipped items in inventory table.
Fixes unequip message processor.
Starts building json for classes list.
Reverted back to 124227d for demo purposes
added npcs to json file and gamestateserializer
added sprite sheet info (will need to create spritesheet information on this)
attacking no longer hurts yourself
loot now is added to world, but is still not sent to frontend
Adds endpoint classes which doesn't work.
Attacks and stuff are in the AI, but there's issues with the attack system
Merge pull request #85 from ayaigame/tempai

Tempai
Classes endpoint is working correctly. Class factory is not finished though.
Removes println.
added interact messages, and loot messages
set up back and forth for both types
removed pushing of players
Saves to equipment table. WIP.
print out messages
added npcs and respawning system for npcs